Hampshire · London and the South East
Denmead Electronic Leak Detection
Electronic leak detection to pinpoint holes in flat roof membranes in Denmead, carried out by an experienced roof surveyor. Every survey comes with a written report and photographs.
- Leaks under green or ballasted roofs
- Damage from equipment installers
- Leaks showing away from the breach
Rented homes, blocks and businesses
Shared roofs need a little more planning: access has to be agreed with whoever owns or manages the building. Mention it when you get in touch and we will plan the survey around it.
An agent can book and manage the survey for a landlord. We agree a time with the tenant beforehand.
About our electronic leak detection in Denmead
Green roofs, ballasted roofs and roofs under paving are harder to test. What sits on the membrane can affect which method will work and parts may need to be lifted. We will discuss it with you when we quote. Any details of the build-up help because they show what’s under the surface. We will tell you if the roof can’t be tested. Common reasons to book are gaps at membrane joints and breaches around outlets and penetrations, across flat roof membranes, roof terraces and balconies and green roofs.
Around Denmead, many homes have a garden room, garage or outbuilding with a flat roof. They’re easy to forget, but water through a garage roof can spoil whatever is stored inside. It’s worth mentioning them as you book, so the visit can include them. Felt, rubber and GRP coverings on garages and outbuildings age in just the same way as the main roof’s.
Pictures do a lot of the work in our reports, so you can see each defect rather than just read about it. Anything out of sight on the day is listed as such.
- Location
- Denmead (PO7)
- Wider area
- Hampshire
- Prices
- Quoted for your roof
- Reports
- Emailed report with photos and recommendations
- When we survey
- Weekdays and weekends
- Insured
- PI and public liability insurance
- Call
- 07833 053749
- Last updated
- 27 October 2026
Different roofs, different checks
Inverted and paved roofs
If the build-up rules out ELD, we will say so.
Liquid-applied waterproofing
Liquid waterproofing has no laps but holes and thin areas can occur. Suitability for ELD depends on the system.
Signs you need electronic leak detection in Denmead
Work on the roof can damage a membrane. Engineers fitting equipment, solar panels or aerials may leave damage behind.
Look out for signs like these:
- Leaks through a covered membrane
- Waterproofing to test before it is covered
- Failed seams and laps
- Leaks that return after repairs
For an older house near a landmark such as Church of All Saints, the flat roofs on later extensions tend to wear out long before the main roof.
Choosing a roof surveyor
- What exactly goes into their report
- How soon the report will arrive
- What experience they bring
- Whether any drone flown is registered with the CAA
Useful tips for Denmead property owners
A survey works best with a little help from you, before and after. Some tips:
- Keep a note of leaks after rain
- Limit access to the roof
- Tell us about the membrane and build-up if you know it
- Ask contractors to protect the membrane
Where the evidence points to walls, copings or rooflights, we’ll note it, with a suggestion of what to check next.
Act on leaks quickly. Water under a membrane can spread.
Places near Denmead
Also in Denmead
Questions from Denmead
Is Denmead within the area you cover?
Yes, we do. We survey roofs across London and South East England, from towns to the smallest villages. Longer journeys are simply planned beforehand.
Does a conservation area affect roof work in Denmead?
You can check whether a building is listed on Historic England’s list, and your council can tell you if it’s in a conservation area. If a home is listed, changes that affect its special interest need listed building consent, and in a conservation area re-roofing in different materials may need permission.
Do you look in the loft space?
If there’s a loft and safe access to it, yes. The loft space can show things the outside cannot, such as damp timbers, staining or daylight.
Does ELD include fixing the breach?
No. ELD is testing only. You get the breach locations with photos so your roofer can fix them.
How experienced are you?
We have completed more than 5,000 surveys, over more than 20 years.
Can you test a green or ballasted roof?
Sometimes. The layers on top and the build-up below decide it, and some may need lifting. We’ll discuss it before we quote.
Are you insured?
Professional indemnity and public liability insurance cover our surveys. Ask if you need details for a managing agent or building owner.
Flat roofs in Denmead
Denmead lies within about 4 miles of the sea, so there’s more wind and more salt in the air than further inland. Coastal wind works at the edges of flat roofs, and salt air wears metal trims and fixings. What can be done to an older roof may depend on listing or a conservation area. The council is the place to check, along with Historic England’s list, ideally before any re-roofing is planned.
Take a building like Denmead Junior School: schools and public buildings often have big flat roofs, and their outlets and upstands need regular checks. Landlords with a home close to Cosham station may find that the flat roof over a let home is worth a look before it becomes a tenant complaint.
Denmead is about 2 miles north-west of Waterlooville, in Hampshire. Surveys in Denmead work the same way as everywhere we cover: a proper look at whatever is safely visible, photographs and a clear written report. Denmead is one of the towns and villages in Hampshire we cover for electronic leak detection. You can also see our page for Portsmouth.
Postcode districts we cover here for electronic leak detection: PO7. Streets in the area include Ashling Park Road, Chestnut Close and The Orchard. Being close to the B2150, Denmead is simple for us to get to. Other places close to Denmead include Anmore (1 mile east), Anthill Common (1 mile north-west), Wecock Farm (2 miles east), Lovedean (2 miles east) and Hambledon (2 miles north-west). Further out, we also cover Winchester (15 miles north-west), Gosport (8 miles south-west), Havant (4 miles south-east), Eastleigh (13 miles west), Fareham (7 miles south-west) and Chandler's Ford (15 miles north-west).
What’s near Denmead
We work in homes and buildings around The Cowplain School and The Harvest Home pub and the streets around them. For rail, the closest station is Cosham station, about 4.1 miles south of the centre. A little further out are Queen Alexandra Hospital (3.5 miles south) and Portchester Castle (4.9 miles south-west). For a walk, there is Portsdown Hill and St Clair's Meadow.
What happens on the day
After the inspection, everything we found is written up in a report with photos. On timing, it normally takes as long as needed for the size of the roof and how it’s built, and we’ll give you a guide when quoting. A visit to Denmead is planned like any other: the time, the access and where to park are agreed in advance. Visits can be on weekdays, Saturdays or Sundays. Let us know about any garages, outbuildings or extensions you want included.
- We ask about the roof, its age, its membrane and where leaks appear inside.
- The roof is assessed to see if electronic testing will work on it.
- The method depends on the membrane and what sits above and below it.
- We test the membrane and find where current is passing through it.
- You get a report showing where each breach is, for your roofer to repair.
Preparing for the visit
- Note where any stains or damp appear
- Jot down any questions you want answered
- Make sure we can get to the back of the property
Getting a price
To arrange a survey, phone 07833 053749 or use the contact form with the address and what you’d like to know about the roof. We’ll confirm the price before booking.
Advice
When you need someone else
Every survey has limits, and it is better to know them up front. Keep these in mind:
- Leaks from walls, copings or rooflights
- Some conductive membranes
- Sections we can’t safely access
If you are not sure which survey you need, phone 07833 053749 or use the contact form and we’ll give you a straight answer. The full list of what we check.
Roofs we survey in Denmead
- Green roofs
- Roof terraces and balconies
- Commercial flat roofs
- Flat roof membranes
- Liquid-applied waterproofing
- Single-ply roofs